eStudy Foto Forum: /home/estudydev/workspace/eStudy_svn/web/photogallery/classes/class.photofunctions.inc.php Source File

00001 <?php
00002 /*--------------------------------------------------------------------------+
00003 This file is part of eStudy.
00004 photogallery/classes/class.photofunctions.inc.php
00005 - Modulgruppe:  Photogallery
00006 - Beschreibung: Diverse Funktionen
00007 - Version:      02/26/04
00008 - Autor(en):    Thomas Loreit <smg@newtron-game.com>
00009 +---------------------------------------------------------------------------+
00010 This program is free software; you can redistribute it and/or
00011 modify it under the terms of the GNU General Public License
00012 as published by the Free Software Foundation; either version 2
00013 of the License, or any later version.
00014 +---------------------------------------------------------------------------+
00015 This program is distributed in the hope that it will be useful,
00016 but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018 GNU General Public License for more details.
00019 You should have received a copy of the GNU General Public License
00020 along with this program; if not, write to the Free Software
00021 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00022 +--------------------------------------------------------------------------*/
00035 function mergePhotoRights(&$to, &$from) {
00036     if ($from->view == 1) $to->view = 1;
00037     if ($from->upload == 1) $to->upload = 1;
00038     if ($from->edit == 1) $to->edit = 1;
00039     if ($from->remove == 1) $to->remove = 1;
00040     if ($from->admin == 1) $to->admin = 1;
00041 }
00048 function testPhotoRight(&$rights, $rightname) {
00049     if ($_SESSION['usergroup'] == ADMIN) return true; //portaladmins haben immer alle rechte
00050     if ($_SESSION['usergroup'] == DOZENT && $_SESSION['course'] != 0) return true; //in ihren kursen haben dozenten alle rechte
00051     if ($rights) {
00052         if ($rights->admin) return true; //ein admin hat alle rechte
00053         $result = 0;
00054         eval('$result=$rights->'.$rightname.';');
00055         return $result == 1;
00056     } else return false;
00057 }
00069 function getGalleryRights() {
00070     global $settings, $db, $EZSQL_ERROR;
00071     $safecourse = Data::toMysql($_SESSION['course']);
00072     $safeuser = Data::toMysql($_SESSION['userid']);
00073     if ($_SESSION['usergroup'] == SCHUELER || $_SESSION['usergroup'] == GAST)
00074         $globalrights = $db->get_row("SELECT 1 as view, 0 as upload, 0 as edit, 0 as remove, 0 as admin FROM photogallery_rights WHERE course_id=".$safecourse." AND album_id='0' AND usr_id='0' LIMIT 1");
00075     else
00076         $globalrights = $db->get_row("SELECT * FROM photogallery_rights WHERE course_id=".$safecourse." AND album_id='0' AND usr_id='0' LIMIT 1");
00077     $userrights = $db->get_row("SELECT * FROM photogallery_rights WHERE course_id=".$safecourse." AND album_id='0' AND usr_id='".$safeuser."' LIMIT 1");
00078     if (!$db->num_rows) { 
00079                 // Gäste haben nur Lesezugriff, es sei denn ihnen wurde explizit Einzelrecht gegeben
00080         /*if ($_SESSION['usergroup'] == SCHUELER || $_SESSION['usergroup'] == GAST)
00081                 $globalrights = $db->get_row("SELECT 1 as view, 0 as upload, 0 as edit, 0 as remove, 0 as admin");
00082         else*/ 
00083                 // Standardrechte
00084                 $globalrights = $db->get_row("SELECT 1 as view, 1 as upload, 1 as edit, 1 as remove, 0 as admin");
00085     }
00086     if ($globalrights) {
00087         if ($userrights) mergePhotoRights($globalrights, $userrights);
00088         return $globalrights;
00089     } else if ($userrights) return $userrights;
00090 }
00102 function getAlbumRights($albumID) {
00103     global $settings, $db, $EZSQL_ERROR;
00104     $safecourse = Data::toMysql($_SESSION['course']);
00105     $safeuser = Data::toMysql($_SESSION['userid']);
00106     $safealbum = Data::toMysql($albumID);
00107     $globalrights = $db->get_row("SELECT * FROM photogallery_rights WHERE course_id=".$safecourse." AND album_id='$safealbum' AND usr_id='0' LIMIT 1");
00108     $userrights = $db->get_row("SELECT * FROM photogallery_rights WHERE course_id=".$safecourse." AND album_id='$safealbum' AND usr_id='".$safeuser."' LIMIT 1");
00109     if ($globalrights) {
00110         if ($userrights) mergePhotoRights($globalrights, $userrights);
00111         return $globalrights;
00112     } else if ($userrights) return $userrights;
00113 }
00114 function echoRightsSelectors($prefix, $photo_view, $photo_upload, $photo_edit, $photo_delete, $photo_admin) {
00115     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_view' ";
00116     echo $photo_view == true ? 'checked=\'checked\'' : '';
00117     echo "/></td>";
00118     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_upload' ";
00119     echo $photo_upload == true ? 'checked=\'checked\'' : '';
00120     echo "/></td>";
00121     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_edit' ";
00122     echo $photo_edit == true ? 'checked=\'checked\'' : '';
00123     echo "/></td>";
00124     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_delete' ";
00125     echo $photo_delete == true ? 'checked=\'checked\'' : '';
00126     echo "/></td>";
00127     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_admin' ";
00128     echo $photo_admin == true ? 'checked=\'checked\'' : '';
00129     echo "/></td>";
00130 }
00131 function echoGalleryRightsSelectors($prefix, $photo_upload, $photo_edit, $photo_remove) {
00132     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_upload' ";
00133     echo $photo_upload == true ? 'checked=\'checked\'' : '';
00134     echo "/></td>";
00135     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_edit' ";
00136     echo $photo_edit == true ? 'checked=\'checked\'' : '';
00137     echo "/></td>";
00138     echo "<td class='tableCell' style='text-align:center;'><input type='checkbox' name='{$prefix}_remove' ";
00139     echo $photo_remove == true ? 'checked=\'checked\'' : '';
00140     echo "/></td>";
00141 }
00148 function echoRightsUserlist($condition) {
00149     global $db;
00150     $course = "";
00151     if ($_SESSION['course'] != 0) {
00152         $course = "AND user.ID IN( SELECT userID FROM user_course WHERE courseID='{$_SESSION['course']}')";
00153     }
00154     $query = "SELECT ID, Vorname, Nachname, Invisible, Usergroup FROM user WHERE user.ID > 0 $course AND user.Invisible=0 $condition";
00155     $query.= " ORDER BY user.Nachname, user.Vorname";
00156     $users = $db->get_results($query);
00157     if (count($users) > 0) {
00158         $i = 0;
00159         foreach($users as $user) {
00160             echo "<option ";
00161             if ($user->Invisible == 1) echo "style='font-style:italic'";
00162             echo " value='".$user->ID."' ";
00163             echo ">";
00164             echo Data::toHTML("$user->Nachname, $user->Vorname", false);
00165             echo "</option>\n";
00166             $i++;
00167         }
00168         return true;
00169     } else return false;
00170 }
00175 function getGalleryRight($rightname) {
00176     $rights = getGalleryRights();
00177     return testPhotoRight($rights, $rightname);
00178 }
00183 function getAlbumRight($rightname, $albumid) {
00184     $rights = getAlbumRights($albumid);
00185     return testPhotoRight($rights, $rightname);
00186 }